Home / 763,807.20-1,144,155.60-390,040.80

Finding the Fourth Proportional to 763,807.20, 1,144,155.60 and 390,040.80

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Solution

The fourth proportional to 763,807.20, 1,144,155.60 and 390,040.80 is: 584,267.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,807.20 : 1,144,155.60 = 390,040.80 : x
  2. Step 2: Convert to fraction form
    763,807.20/1,144,155.60 = 390,040.80/x
  3. Step 3: Cross multiply
    763,807.20x = 1,144,155.60 × 390,040.80
  4. Step 4: Simplify right side
    763,807.20x = 446,267,365,548.48
  5. Step 5: Solve for x
    x = 446,267,365,548.48/763,807.20
  6. Step 6: Final answer
    x = 584,267.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.